SUUNTO Zoop - Manual (Page 104)

Oxygen Limit Fraction A term used by SUUNTO for the values displayed in
the Oxygen Toxicity bargraph. The value is either the
CNS% or the OTU%.
O
2
% Oxygen percentage or oxygen fraction in the breathing
gas. Standard air has 21% oxygen.
Oxygen partial pressure Limits the maximum depth to which the used Nitrox
mixture can safely be used. The maximum partial
pressure limit for enriched air diving is 1.4 bar. The
contingency partial pressure limit is 1.6 bar. Dives
beyond this limit have the risk for immediate oxygen
toxicity.
PO
2
Abbreviation for oxygen partial pressure.
RGBM Abbreviation for Reduced Gradient Bubble Model.
Reduced Gradient
Bubble Model
Modern algorithm for tracking both dissolved and free
gas in divers.
Repetitive dive Any dive whose decompression time limits are affected
by residual nitrogen absorbed during previous dives.
Residual nitrogen The amount of excess nitrogen remaining in a diver
after one or more dives.